318 72 



65. Dryopteris Sprengelii (Klf.) O. Ktze. Rev. Gen. PI. 2: 813. 1891 — [Fig. 42]. 



Syn. Aspidium Sprengelii Kaulf. Flora 1823: 365: Lastrea Sprengelii Pr. Tent. 

 75. 136; Nephrodinm Sprengelii Hk. sp. fil. 4: 94. 1862; Dryopteris Balbisii Urban, 

 Symb. Anlill. 4: 14. 1903; C. Chr. Ind. 253. 1905 (non Polypodiiim Balbisii Spreng. 

 = D. sancta). — Lastrea angustata Pr. Pent. 75. 1836 (Sieber n. 188). — Aspidium 

 glanduliferum Karsten; Klotzsch, Linnaea 20: 369. 1847 (Karsten n. 142).— Aspidium 

 Berteroanum Fée, 11 mém. 77 lab. 21 fig. 3. 1866 (L'Herminier n. 155). — Nephrodium 

 Sherringii Jenman, Journ. Bot. 1879: 261; Bull. Dept. Jamaica n. s. 3: 47. 1896. 



Type specimen from Martinique, leg. Sieber, Fl. Mart. exsicc. n. 355 (HB!). 



Specimens examined: 



India occ. Cuba, prope Monte Verde, Wright n. 822 (HB). — Haïti, Dr. 

 Weinland n. 32 (HB). — Jamaica, Wallingford 1875 (HB). — Puerto Rico: 

 Maricao, Sintenis n. 410 (HC. HS). — St. Thomas: Signalhill, 500 m. Eggers 

 n.455 (HB. HC). — Guadeloupe, L'Herminier n. 155 (HB); Duchassaing (HB). — 

 Dominica, Sieber n. 188 (HB). — Mar ti n ique, Sieber n. 355 (HB); Rivoire (HB); 

 Isert (HH). — St. Lucia, H. B. Murray 1898 (HB). — St. Vincent, L. Guilding 

 n. 741 (HB); Eggers n. 6732 (HC); H.H. & G.W.Smith (HC). — Trinidad, Day 

 n. 353 (HB). 



Mexico: Mirador, Liebmann (HH). — Tabasco, Linden n. 2494 (HB). — 

 Esquintla, Cuyuta 200', Donnell-Smith n. 2457 (HH). 



Guatemala: Majatenango, Bernoulli n. 443 (HB). 



Costa Rica: Puerto Viejo, Pittier n. 7490 (HB. HC). — Meseta, 2200 m., 

 Alfaro n. 16903 (HC). 



Panama, W. Hillebrand (HB. HC). 



Columbia, Karsten n. 142 (HB). — Sajita Marta, H.H.Smith n. 2209 (HC). 



Venezuela, Tovar, Moritz n. 40 (HB). 



Ecuador: Quito, Sodiro (HC). 



I have seen no specimen from Brazil, from which countrj' the species has 

 been recorded by several authors; the plants from Brazil called Sprengelii are either 

 D. tenerrima or D. cheilanthoides. 



D. Sprengelii is a very constant species, only somewhat varying in size, well- 

 marked by the following characters: Rachis finely glandulose but nearly always 

 without hairs. Upperside of the lamina sparsely and shortly pubescent, on the 

 costæ strigilose, underside rather densely furnished with large, sessile, wine-coloured 

 glands both along the costæ and on the parenchyma, but as a rule quite destitute 

 of hairs; very rarely rachis and costæ beneath bear a few short hairs. Stem short, 

 rarely more than 1^/-' dem., rather strong. Lamina downwards rather abruptly 

 narrowed (Type IV), the lower 5—6 pair of pinnæ very small, nearly glanduli- 

 form, distant. Pinnæ opposite, often nearly horizontal, the largest 10 — 15 cm. 

 long by I'/a— 2'/a cm. broad. Segments numerous, patent, linear, rather closely 

 placed with acute sinuses between. Pinnæ are truly lanceolate, not gradually 



